From d910e34d0deecc4af18cf98377479cdfb78eac31 Mon Sep 17 00:00:00 2001
From: Martin Mares <mj@ucw.cz>
Date: Mon, 8 Jul 2019 19:23:09 +0200
Subject: [PATCH] Library: Comments

---
 lib/util-debug.c |  6 ++++++
 lib/util.h       | 12 ++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/lib/util-debug.c b/lib/util-debug.c
index e47ff46..ed1076d 100644
--- a/lib/util-debug.c
+++ b/lib/util-debug.c
@@ -1,3 +1,9 @@
+/*
+ *	Debugging Utilities for STM32
+ *
+ *	(c) 2018--2019 Martin Mareš <mj@ucw.cz>
+ */
+
 #include "util.h"
 
 #include <libopencm3/stm32/usart.h>
diff --git a/lib/util.h b/lib/util.h
index a84d099..b06b6ad 100644
--- a/lib/util.h
+++ b/lib/util.h
@@ -1,9 +1,17 @@
+/*
+ *	General Utility Library for STM32
+ *
+ *	(c) 2018--2019 Martin Mareš <mj@ucw.cz>
+ */
+
 #include <stdbool.h>
 #include <stddef.h>
 #include <stdint.h>
 
 #include "config.h"
 
+// Types
+
 typedef unsigned int uint;
 typedef uint8_t byte;
 typedef uint16_t u16;
@@ -11,11 +19,15 @@ typedef int16_t s16;
 typedef uint32_t u32;
 typedef int32_t s32;
 
+// Macros
+
 #define MIN(x,y) ((x) < (y) ? (x) : (y))
 #define MAX(x,y) ((x) > (y) ? (x) : (y))
 
 #define UNUSED __attribute__((unused))
 
+// Unaligned access to data
+
 static inline uint get_u16_le(byte *p)
 {
 	return (p[1] << 8) | p[0];
-- 
2.39.5